Finding the Fourth Proportional to 12,976.58, 17,909.34 and 8,504.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.58 : 17,909.34 = 8,504.12 : x
2. Step 2: Convert to fraction form
   12,976.58/17,909.34 = 8,504.12/x
3. Step 3: Cross multiply
   12,976.58x = 17,909.34 × 8,504.12
4. Step 4: Simplify right side
   12,976.58x = 152,303,176.48
5. Step 5: Solve for x
   x = 152,303,176.48/12,976.58
6. Step 6: Final answer
   x = 11,736.77